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Sming - Open Source framework for high efficiency native ESP8266 development

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Sming

Sming - Open Source framework for high efficiency WiFi SoC ESP8266 native development with C++ language.

ESP8266 C++ development framework

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Summary

  • Fast & user friendly development
  • Work with GPIO in Arduino style
  • High effective in perfomance and memory usage (this is native firmware!)
  • Compatible with standard Arduino libraries - use any popular hardware in few lines of code
  • OTA (cloud) firmware updating
  • Build-in file system: spiffs
  • Build-in powerfull network and wireless modules
  • Build-in great JSON library: ArduinoJson
  • HTTP, AJAX, WebSockets support
  • MQTT protocol based on [libemqtt] (https://github.com/menudoproblema/libemqtt)
  • Open source LWIP stack
  • Simple and powerfull hardware API wrappers
  • Based on Espressif SDK v1.0.1b1

Getting started

You can find more information about compilation and flashing process by reading esp8266.com forum discussion thread.

Examples

More information at Wiki Examples page.

Simple GPIO input/output

#define LED_PIN 2 // GPIO2
...
pinMode(LED_PIN, OUTPUT);
digitalWrite(LED_PIN, HIGH);

Connect to WiFi and start Serial communication

Serial.begin(9600);
Serial.println("Hello Sming! Let's do smart things.");

WifiStation.enable(true);
WifiStation.config("LOCAL-NETWORK", "123456789087"); // Put you SSID and Password here

Read DHT22 sensor

#include <Libraries/DHT/DHT.h> // This is just popular Arduino library!

#define WORK_PIN 0 // GPIO0
DHT dht(WORK_PIN, DHT22);

void init()
{
	dht.begin();

	float h = dht.readHumidity();
	float t = dht.readTemperature();
}

HTTP client

HttpClient thingSpeak;
...
thingSpeak.downloadString("http://api.thingspeak.com/update?key=XXXXXXX&field1=" + String(sensorValue), onDataSent);

void onDataSent(HttpClient& client, bool successful)
{
	if (successful)
		Serial.println("Successful!");
	else
		Serial.println("Failed");
}

Embedded HTTP WebServer

server.listen(80);
server.addPath("/", onIndex);
server.addPath("/hello", onHello);
server.setDefaultHandler(onFile);

Serial.println("=== WEB SERVER STARTED ===");
Serial.println(WifiStation.getIP());

...

void onIndex(HttpRequest &request, HttpResponse &response)
{
	TemplateFileStream *tmpl = new TemplateFileStream("index.html");
	auto &vars = tmpl->variables();
	vars["counter"] = String(counter);
	vars["IP"] = WifiStation.getIP().toString();
	vars["MAC"] = WifiStation.getMAC();
	response.sendTemplate(tmpl);
}

void onFile(HttpRequest &request, HttpResponse &response)
{
	String file = request.getPath();
	if (file[0] == '/')
		file = file.substring(1);
		
	response.setCache(86400, true);
	response.sendFile(file);
}

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